Chicago Tuckpointing: What Owners Need to Know

Tuckpointing in Chicago is the repair that keeps water out of your brick walls. A mason cuts out the failing mortar between the bricks and packs in new mortar. Done right with the right mortar, it protects the wall for a long time. Done wrong, with mortar that is too hard, it can ruin the brick itself, and you will pay twice. This guide covers the whole topic: what it is, how to tell if you need it, which mortar belongs on old Chicago brick, how the work is done, what the City requires, and how to hire it out.

If you only read one part, read this:

1. Check your joints. Mortar that crumbles when you scrape it with a key, joints recessed deep behind the brick face, or cracks and gaps means water is getting in.
2. The mortar matters more than the labor. New mortar should be softer than the brick. A hard portland-cement mix on old soft brick is the classic expensive mistake.
3. Chicago treats it as permitted masonry work. Expect a permit and a licensed mason contractor.
4. Do not delay on loose masonry. A wall that sheds brick is a hazard for people below, and an inspector can cite it.

The rest of the guide explains each point with the sources behind it, and links to deeper articles on every topic. Check with the Department of Buildings (DOB) on anything that touches permits or fees, since those change.

What is tuckpointing?

Tuckpointing is the removal of deteriorated mortar from brick joints and its replacement with new mortar. In everyday Chicago use, the word covers all of that work. The Brick Industry Association says the terms pointing, repointing and tuckpointing are used interchangeably, and the ASTM standard treats tuckpointing as a synonym for repointing (Brick Industry Association).

There is a technical difference you will hear from some masons. Strictly, tuckpointing can mean a decorative raised joint laid over flush mortar, and repointing is the plain removal and replacement. In practice, when a Chicago contractor quotes you for tuckpointing a two-flat, they mean repointing the joints. For a short version, read what is tuckpointing. For the vocabulary fight, read tuckpointing vs repointing: the real difference and tuck pointing vs flush pointing.

What it is not: it is not a coating, not caulk and not a cosmetic touch-up. Caulk does not stand in for mortar, as can you caulk mortar joints explains.

Why does Chicago brick need tuckpointing so often?

Mortar is the sacrificial part of a brick wall. It is softer than the brick on purpose, so that the wall's stresses and moisture move through the joints and not through the bricks. That is the core principle in the National Park Service's guidance on repointing: the mortar should be softer and more permeable than the masonry units, and the joint is the part that is supposed to wear (National Park Service).

Chicago gives mortar a hard life. Water gets into joints, freezes and expands, then thaws. Repeat that over winters and the surface erodes, joints open, and water gets deeper. Road salt and splash from sidewalks make it worse. Many older two-flats, three-flats, greystones and bungalows are built of common brick that is soft by modern standards, which is why the mortar choice matters so much (see Chicago common brick: what it is and why it's soft). Salt crystallizing inside brick can also push the outer face off, a process called spalling (Brick Industry Association and NPS). We explain the freezing side in how freeze-thaw damages Chicago brick.

So tuckpointing is routine upkeep, not a one-time repair, and the question is not whether your joints will need work. It is when. How long does tuckpointing last in Chicago? gives an honest answer.

How do you know if your brick needs tuckpointing?

You can check this yourself in ten minutes with a key or a screwdriver and a flashlight. The signs:

• Mortar that crumbles or sands out when scraped. Our article mortar turning to sand explains what that means.
• Joints recessed deep behind the brick face, so you can feel a groove.
• Cracks along the joints, especially stair-step cracks, which can also signal movement. See stair step cracks in brick: when to worry.
• Gaps or missing mortar, particularly at the top of the wall, around windows and chimneys, and below roof edges.
• Water stains inside, or damp plaster on an exterior wall.
• White crusty deposits (efflorescence). These need three things at once: soluble salts, water and a path to the surface. Salts usually come from mortar, backing or soil, not the brick, and bloom on a new wall under a year old usually fades. When it shows up after a year, it points to water getting in (Brick Industry Association).
• Bricks with flaking or peeling faces. That is spalling, and tuckpointing alone will not fix it. See what spalling brick looks like.

How to tell if your Chicago brick needs tuckpointing goes through a full self-inspection. If you are not sure it is necessary yet, is tuckpointing necessary? When you can wait is a straight answer. And if you want a printable walk-around, use our brick facade self-inspection checklist.

What does Chicago code say about crumbling mortar?

The City's existing-building code says the exterior of a structure must be maintained in good repair, structurally sound and sanitary. The unsafe conditions it lists include siding and masonry joints not maintained weather resistant or water tight, veneer and cornices not properly anchored, and exterior stairs and porches that are not structurally sound (Title 14X). That is the standard an inspector holds you to.

Real consequences follow when brick comes loose. In July 2016, bricks fell from a two-family home in North Lawndale and injured two passersby (ABC7). A West Englewood church facade collapse after a failed inspection led to City citations for failing to maintain the exterior wall and lintel (CBS Chicago).

The City's Exterior Wall Program, which requires periodic facade reports, applies to high-rise buildings, meaning those more than 80 feet above grade, not to a typical two-flat or three-flat. Low-rise buildings are still bound by the maintenance rule above, and an inspector can cite loose masonry after a 311 complaint (City of Chicago). Our explainer what Chicago code says about crumbling mortar joints goes through the citations in detail, and bricks falling from a Chicago building breaks down what typically failed. If you have already received a notice, start with our Chicago building violations guide.

What mortar belongs on old Chicago brick?

This is the part that separates a repair that lasts from one that wrecks your wall.

The rule. Repointing mortar must be softer, meaning lower in compressive strength, and more vapor permeable than the brick, and no harder than the original mortar. The National Park Service calls the idea that harder and stronger means better a common error, because mortar stronger than the masonry makes the bricks take the stress, and they crack and spall (National Park Service). The Brick Industry Association agrees on the core point: repointing mortar should be similar to or weaker than the original mortar to avoid irreparable brick damage (Brick Industry Association).

Why it happens. When mortar is less permeable than the brick, moisture and dissolved salts move out through the brick instead. Salts crystallizing inside the face can pop it off, and the NPS shows exactly this behind hard portland mortar (National Park Service).

The mortar types. ASTM C270 mortar comes in types, in decreasing strength: M (about 2,500 psi), S (1,800), N (750), O (350) and K (75). More lime makes mortar softer and more permeable (National Park Service). For historic masonry, the NPS points to lime-rich mixes (National Park Service). The BIA recommends Type N for normal use, including most veneer, and says to select the type with the lowest compressive strength that meets the requirements (Brick Industry Association).

Put that together for old Chicago common brick, and you get a simple instruction: do not let anyone default to "the strongest mix." The right call depends on your brick and the old mortar, and a good mason can explain it. Note that these are preservation and industry guidance, not a City mandate. Chicago's code does not prescribe a mortar type in the text we read, and the City still requires permits and licensed contractors.

We cover this in depth in:

• The mortar mistake that ruins Chicago brick, the classic portland-cement error.
• Type N vs Type S mortar for Chicago brick.
• Matching mortar color when you tuckpoint. Color comes mostly from the sand, and a test panel about 3 feet by 3 feet sets the standard (National Park Service).

How is tuckpointing actually done?

The sequence is straightforward. The details separate crews.

1. Remove the old mortar. NPS guidance says to remove old mortar to a depth of about 2 to 2.5 times the joint width, which for most brick joints means roughly 1/2 to 1 inch, and to remove any loose mortar deeper than that. Hand chisels are the least damaging. Power grinders only in skilled hands and only on horizontal joints, with care (National Park Service). How deep should old mortar be ground out? has the full explanation.
2. Clean the joints of dust and debris and dampen the wall as the mason directs.
3. Pack the new mortar in layers, then tool the joint to a profile that sheds water.
4. Cure it properly. High-lime mortar left to dry too fast can chalk and lose adhesion. NPS advice is light misting after the joints are thumbprint hard and covering with burlap for the first three days (National Park Service). For how long new mortar needs, see how long does new mortar take to cure.
5. Clean up without damaging the brick. Aggressive cleaning is its own mistake, covered in how to clean Chicago brick without damaging it.

Dust is a health issue. OSHA's silica standard requires shrouded grinders with dust collection for mortar removal, with respirators, and it prohibits dry sweeping or brushing that could expose workers (OSHA). Ask any contractor how they control dust. In Chicago, masonry grinding may also trigger a City air quality permit, and lead-safe work practices and asbestos notification can apply regardless of the permit exemptions (City of Chicago). Tuckpointing dust: what to expect at your building tells you what a clean job looks like.

Do you need a permit to tuckpoint in Chicago?

Almost always, yes. The City's Express Permit page for masonry work lists "routine maintenance and repair for masonry walls, such as tuckpointing, up to 50,000 square feet of work" as eligible (City of Chicago). Tuckpointing is not on the City's list of work needing no permit. The only no-permit masonry item is in-kind replacement of up to 50 square feet of masonry on residential buildings up to four stories (City of Chicago). The Express Permit Program launched in November 2023 and replaced the old "Easy Permit" (City of Chicago).

Here are the edges when tuckpointing turns into bigger masonry work:

• Lintel replacement over 6 feet and concrete repair over 100 square feet need drawings from an Illinois architect or structural engineer (City of Chicago).
• Rebuilding all layers of an exterior wall, or a parapet taller than 48 inches, falls outside Express (City of Chicago).

Our full explainer is do you need a permit for tuckpointing in Chicago, and the broader picture is in do you need a permit to repair brick and the Chicago building permits guide. Scaffolding that uses the street or sidewalk has its own permit, covered in Chicago public way permits.

Who is allowed to do tuckpointing?

Masonry permits require a City-licensed mason contractor, Class A or Class B for brick, unless the owner qualifies to act as their own contractor (City of Chicago). The mason license covers work in stone, concrete, terra cotta (including clay brick) and structural tile, and the business must employ a supervising mason who passed the City exam. Employees work under the license, not 1099 workers (City of Chicago).

There is an owner exception. If the building is your primary residence, three stories or fewer with six or fewer units, the mason license rules have an exception for the owner, for one property per calendar year (City of Chicago). For an Express permit, the City wants its owner-as-contractor form and a government ID showing you live there, and you take on responsibility for safety, inspections and code compliance (City of Chicago). That is a legal route, but it is not the same as being qualified to do the work. Can you DIY tuckpointing? tells you what is realistic.

Chicago masonry license: who can legally lay your brick gives the licensing detail, and tuckpointer or mason: who do you call? answers a common question. Before you sign anything, read how to check a contractor's license in five minutes.

When is the right time of year to tuckpoint?

Mortar needs the right temperature to cure. NPS guidance says wall temperatures between 40 and 95 degrees Fahrenheit prevent freezing or excessive evaporation of the mortar water, and warns against antifreeze admixtures, because they can add salts that cause later efflorescence (National Park Service). Cold weather masonry practice treats anything below 40 degrees as cold and requires protection steps as the temperature falls, including enclosures at 20 degrees and below (Masonry Society guidance via BIA).

That means tuckpointing is mostly a warm-season job in Chicago, and good crews schedule accordingly. Whether a winter job is possible at all depends on the crew's cold weather practice, and we answer that in can tuckpointing be done in winter in Chicago?. For rain, see can tuckpointing be done in the rain, and for how long the work takes, how long does tuckpointing take. Our seasonal planner is the tuckpointing season guide, and the wider calendar is in the best time of year for each Chicago exterior repair.

How much of the building should you do?

Scope is the biggest decision after mortar type, and the answer is rarely "just the front."

• Front only or whole building? Front-only work is common for budget and curb appeal, but a wall that still leaks on the sides keeps damaging brick. Tuckpoint just the front or the whole building? lays out how to decide.
• Chimneys. They take the harshest weather. Sometimes tuckpointing is enough, and sometimes it is not. See chimney tuckpointing: when it's enough and chimney repair in Chicago: repair or rebuild.
• Limestone and greystones. Stone has different mortar needs. See tuckpointing limestone on a Chicago greystone.
• Painted brick. Paint changes the plan. See can you tuckpoint painted brick.
• Sealing afterward. Coatings alone are not recommended to control moisture problems. Find and fix the water and salt sources first (Brick Industry Association). Our article should you seal brick after tuckpointing goes deeper.
• Bigger masonry problems. Failing lintels, bulging walls and spalled bricks are not tuckpointing jobs. See rust stains under a window, bulging brick wall and can you fix spalling brick without replacing it.

For the wider topic, read our Chicago brick and masonry repair guide.

What drives the cost of tuckpointing?

We do not publish price ranges, because the numbers depend on facts specific to your building. These are the cost drivers:

• Square footage and number of elevations.
• Height and access. Scaffolding, lifts and tight gangways take time and may need public way permits.
• Joint depth and condition. Deep, failing joints take longer than shallow ones.
• Mortar type and color matching. Specialty mixes and test panels add work.
• Other repairs the wall reveals. Replacing bricks, lintels or parapet sections.
• Dust control and cleanup.
• Permit and licensing costs.

Tuckpointing cost in Chicago: what moves the price goes through each one, and gives you questions to ask when you compare estimates. How to compare contractor estimates helps you read them side by side.

What are the most common tuckpointing mistakes?

• Mortar too hard for the brick. The big one. See the mortar mistake that ruins Chicago brick.
• Grinding too deep, too wide or on the wrong joints. Cutting into the brick edges or into vertical joints with a power grinder damages the wall.
• Skipping dust control. A health issue for workers and neighbors, and a code issue for the contractor.
• Matching the wrong color and joint profile. Looks bad for decades.
• Sealing in a leaking wall. Water that cannot get out finds another way.
• No permit. It puts you on the hook for stop work orders and more fees.
• Hiring on price alone. The cheapest estimate often uses the wrong mortar or skips steps.

Our article tuckpointing mistakes that cost Chicago owners twice walks through them in detail.

Ready to get it done right?

Akats handles tuckpointing and the permit paperwork in house, with licensed, insured crews and service in English and Spanish. We start with a look at the wall, the old mortar and the brick, then give you a written scope tied to what we found. See our tuckpointing services, request a free estimate, or call 312-339-9627.

Frequently asked questions

Here are the questions we hear most. The linked articles go further on each one.

Common questions

This article explains general rules and common situations in Chicago. It is not legal advice, and City rules change. For a specific property, check with the Chicago Department of Buildings or a licensed professional.